<div>
    The host keys which will be allowed.
    All other hosts and any modified host keys will be rejected.
    The format is the same as for <code>known_hosts</code>, with one host per line.
    For example:
    <pre>
    github.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl
    bitbucket.org ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl
    </pre>

</div>